Milk frother



FIG. 1 is a perspective view of a milk frother, showing the new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a right view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a top view thereof.

The broken lines in the drawings depict portions of the milk frother that form no part of the claimed design. 

CLAIM The ornamental design for a milk frother, as shown and described. 